The CamelBak HydroBak Hydration Backpack is a pre-owned, lightweight and adjustable pack designed for multisport activities such as backpacking. With a capacity of 1.5L and a 50 oz water reservoir, it is perfect for staying hydrated on the go. The black and blue canvas design features the CamelBak logo and the model name, Hydrobak 1.5L. Thanks for looking have a great day